Encryption of my scripts

This depends on what you are actually trying to achieve.

1) You may try to search Google and Wikipedia for topics
dealing with "CODE OBFUSCATION"

if your are trying to keep your script algorithms a secret.

2) If you are more interested with making sure that the script
has not been tampered with, you can scan it with a hash/
checksum generator to create a unique signature,
such as CRC or MD5

3) You can also ZIP the file into a password protected archive,
and/or convert the archive into a self-decrypting EXE file.

4) You can split the script into two parts:

The first script accepts a password and decrypts the
second script into an temporary file, runs that file and
then securely deletes the file by over-writing it multiple
times using special bit pattern, or launching BCWipe
to do it.

You obviously got to consider what happens when your
script is interrupted, to make sure no open data residue
is left behind.

5) Finally, the ACL program itself may have some
facility or plug-in to do what you need, contact the
manufacturer's tech support.

Hope this helps

Martin